. A wave equation which gives the displacement along y- direction is given by y = 10-4 sin (60t + x) where x and y are in meters and t is time in seconds. This represents a wave A. travelling with a velocity of 300 ms-l in the -ve x- direction B. of wavelength p meters C. of frequency 30/p hertz D. of amplitude 104 meter travelling along the positive x- direction

in a physics laboratory a block x is balanced by a block Y of mass 200 kg,each are suspended from a balance of equal lever arms .the scale pan on X is at a height.H1=2 cm ,where as scale pan on Y is at height 1 cm above the floor.the error in weighing is (in gram)

consider the figure of a single riveted lap joint as follows

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cyclic heat engine operates between. temperature of 30 C. What is the least rate of heat rejection per kW net output of an engine. source temperature of 800 C and sink

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